package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.IService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService {
    @Override
    public ResponseResult login(LoginDto dto) {
        //通过电话号码查询是否存在这个用户
        if(!StringUtils.isBlank(dto.getPhone()) && !StringUtils.isBlank(dto.getPassword())){
            ApUser apUser = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, dto.getPhone()));
            if(apUser==null){
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户不存在");
            }
            //存在通过获取他的盐和传入的密码进行一个md5的加密操作，在跟数据库里的密码进行比较

            String salt = apUser.getSalt();
            String pswd = dto.getPassword();
            pswd = DigestUtils.md5DigestAsHex((pswd + salt).getBytes());
            if(!pswd.equals(apUser.getPassword())){
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }
            //相同生成token,构造登录成功的返回值
            String token =  AppJwtUtil.getToken(Long.valueOf(apUser.getId()));
            HashMap<String,Object> map = new HashMap<>();
            apUser.setSalt("");
            apUser.setPassword("");
            map.put("token",token);
            map.put("user",apUser);
            return ResponseResult.okResult(map);
        }else{
            //如果电话号码和密码是空的，使用游客登录
            //2.游客  同样返回token  id = 0
            Map<String, Object> map = new HashMap<>();
            map.put("token", AppJwtUtil.getToken(0l));
            return ResponseResult.okResult(map);
        }
    }
}
